You're afraid to go out and are careful where you go so you don't run into her. That's a very unhealthy way to live. Pain is part of life and it doesn't kill us, unless we give it all kinds of power that we don't have to give it. If you tie yourself up in knots, trying to never be in uncomfortable situations, you will make your life small and cramped. Just tell yourself, "This won't kill me." And it won't. Go on the bus and go anywhere you normally would. That's how you empower yourself.

You can take more pain than you think you can. When you just let it happen, you'll find that it starts to hurt less than cowering in fear avoiding a painful stimulus. Eventually, other relationship you have will crowd out the memory of this friendship that seems to have withered. Cower and hide, and you'll just take longer getting free and moving on. Refuse to let any situation cause you to make yourself small. You'll just become more and more fragile that way. Choose to be bold. If you do, life will give you more.